Ukrainian forces have seized the settlement of Nadiya, according to the Institute for the Study of War (ISW) think tank.

While Earth is warming in total, not all parts are warming at the same rate or at the same time. Understanding these variations can help scientists forecast future changes and climate-related impacts.

Underneath Antarctica’s endless sheets of ice lies a hidden world of deep valleys, towering peaks, and sprawling plains. For ...

When NASA's Ingenuity Mars Helicopter attempts its first test flight on the Red Planet, the agency's Mars 2020 Perseverance rover will be close by, as seen in this artist's concept. NASA MARCI ...